Home / 538,289,421.12-807,434,132.76-129,345,572.16

Finding the Fourth Proportional to 538,289,421.12, 807,434,132.76 and 129,345,572.16

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Solution

The fourth proportional to 538,289,421.12, 807,434,132.76 and 129,345,572.16 is: 194,018,358.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,289,421.12 : 807,434,132.76 = 129,345,572.16 : x
  2. Step 2: Convert to fraction form
    538,289,421.12/807,434,132.76 = 129,345,572.16/x
  3. Step 3: Cross multiply
    538,289,421.12x = 807,434,132.76 × 129,345,572.16
  4. Step 4: Simplify right side
    538,289,421.12x = 104,438,029,883,355,600
  5. Step 5: Solve for x
    x = 104,438,029,883,355,600/538,289,421.12
  6. Step 6: Final answer
    x = 194,018,358.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.